High-Quality Diesel Exhaust Fluid and Marine AUS40
At Cornerstone DEF Distributors, we provide premium Diesel Exhaust Fluid (DEF) and Marine 40% Urea Supplier Texas, Louisiana, Alabama, Mississippi, Florida, formulated to meet the strictest compliance standards. Whether you operate on land or sea, our products are designed to keep your engines clean, efficient, and within regulatory limits—delivered how and where you need them.
32.5% Diesel Exhaust Fluid (DEF)
ISO Certified Quality: Meets strict ISO 22241 purity standards
SCR System Ready: Compatible with all diesel SCR engines
Flexible Packaging Options: Bulk, totes, drums, and jugs available
Safety Documentation: SDS available for download
Quality Assurance: Certificates of Analysis upon request
40% Marine Urea Solution (AUS40)
IMO Compliance Guaranteed: Meets International Maritime Organization standards
Marine SCR Optimized: Designed specifically for vessel emission systems
Packaging Flexibility: Offered in bulk and multiple container sizes
Safety Transparency: SDS accessible for all products
Verified Quality: Certificates provided for product assurance
Coolants & Antifreeze
Protects engines from overheating and corrosion, suitable for a variety of applications and climates.
Heavy Duty Extended Life Pre-Mix 50/50
Heavy Duty Extended Life Concentrate
Conventional Antifreeze Pre-Mix 50/50
Motor Oils
Designed to meet a wide range of engine performance and protection needs—from passenger vehicles to commercial fleets.
Variants:
0W-16, 0W-20, 5W-20, 5W-30
10W-30, 10W-40, 15W-40, 20W-50
SAE 30, SAE 40
Packaged in:
1-gallon jugs, 5-gallon pales, 55-gallon drums, 275-gallon totes, 4 1-gallon jugs, 3x1 quart jugs, 12x1 quart jugs
Tractor Hydraulic Fluid
1000 THF: Multi-functional fluid formulated for tractors and agricultural machinery; supports both hydraulic systems and transmissions.
Packaged in:
1-gallon jugs, 5-gallon pales, 55-gallon drums, 275-gallon totes, 4 1-gallon jugs, 3x1 quart jugs, 12x1 quart jugs
Hydraulic Oils
High-performance fluids formulated for industrial and mobile hydraulic systems.
ISO 32, ISO 46, ISO 68
Packaged in:
1-gallon jugs, 5-gallon pales, 55-gallon drums, 275-gallon totes, 4 1-gallon jugs, 3x1 quart jugs, 12x1 quart jugs
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